82C862 Datasheet, PDF (15/51 Pages) List of Unclassifed Manufacturers – FireLink USB Dual Controller Quad Port USB

FireLink USB
82C862
3.3.7 Strap Options
The 82C862 component offers several operating mode choices at power-up time. These choices are selected through a strap
resistor that pulls the related pin either up or down to the required level. A 4.7k ohm resistor is recommended.
Table 2. Strap Selected Options
Pin
Mode
PWRON3#
1
0
Enable/Disable Second Host
Enable Second USB Host Controller (Function 1) [DEFAULT]
Disable Second USB Host Controller. All clocks going to the logic for the second host are stopped to
reduce power consumption.
TEST0
0
0
1
1
TEST1
0
1
1
0
Mode Operation
PLL Operational Mode using 12 MHz crystal on X1 and X2 [DEFAULT]
48 MHz clock Operation Mode. X1 connects to 48 MHz clock, X2 no-connect.
NAND Tree test mode
Tristate test mode
SMI#
0
1
PCI Power Management PME# function / Reference USB clock
PME# becomes 48 MHz reference clock output from PLL. Used for testing PLL. Also disables PCI power
management, PCICFG 06h[4] = 0.
Enables PME# function and PCI power management, PCICFG 06h[4]=1. [DEFAULT]
PWRON2#
1
0
Global/Individual Power Control
Individual PWRON# and PWRFLT# for each port: [DEFAULT]
HcRhDescA NoPowerSwitching=0 (MEMOFST 49h[1])
HcRhDescA PowerSwitchingMode=1 (MEMOFST 49h[0])
HcRhDescB PortPowerControlMask bit1,bit2=1,1 (MEMOFST4Eh[1,2])
HcRhDescA NoOvercurrentProtection=0 (MEMOFST 49h[4])
HcRhDescA OvercurrentProtectionMode=1 (MEMOFST 49h[3]])
Global PWRON# and PWRFLT# for each port:
HcRhDescA NoPowerSwitching=0 (MEMOFST 49h[1])
HcRhDescA PowerSwitchingMode=0 (MEMOFST 49h[0])
HcRhDescB PortPowerControlMask bit1,bit2=0,0 (MEMOFST4Eh[1,2])
HcRhDescA NoOvercurrentProtection=0 (MEMOFST 49h[4])
HcRhDescA OvercurrentProtectionMode=0 (MEMOFST 49h[3]])
912-2000-030
Revision 1.0
®
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